Fix the Fork components

[lorenzo-cavazzi]

Motivation

We recently made a quickfix to prevent the Modal component from resetting every time the Redux store updates (connect was triggering mapStateToProps for any change to state -- see here for the changes #2144 ).
Now projects and namespaces are not connected properly to the final component.

Proposal

We should fix the <ForkProjectMapper> component and its descendants.
Ideally, we can move away from the ProjectsCoordinator and leverage RTK's createApi to fetch featured projects and available namespaces. In the process, we will probably remove also ForkProjectMapper leaving just ForkProject where we import the new use(xyz)Query functions created through createApi.

Follow-up ⚠️

After closing this issue, we should create ore or more follow-up issues to swap the other ProjectsCoordinator functions with the new RTK Query functions.